Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.14.253

Description The issue is related to the isdn component, specifically the cpai function, where a check on ctr->cnr is necessary to prevent an array index out of bounds condition. The actual impact and potential for attack have not been fully determined.

Recommendations For Linux Kernel versions prior to v4.14.253, update to version v4.14.253 or later to resolve the issue.